In the anime we had 2 main and 2 supporting characters,but in this OVA it is increased to 3 main characters(we see things mostly from Kirie's perspective)...In the very first scene Kanoe Kirie(Demon Slaying Maiden) shows up and the following opening with her makes you really interested despite of this episode being an OVA(i don't usually like OVA episodes of any anime since they seem forced to me).
This episode has no story like most OVA's but there was no story left after the finale of anime.Instead of giving viewers a new story this OVA gives you %50 comedy,%50 fan service alongside with the characters you loved.Until you re-watch the anime enjoy your last episode without hesitating.
